Use this form to apply for an employer identification number (EIN). An EIN is a nine-digit number (for example, 12-3456789) assigned to employers, sole proprietors, corporations, partnerships, estates, trusts, certain individuals, and other entities for tax filing and reporting purposes. If you file for the EIN online you can download a copy of the official SS4 form as a pdf. Save this pdf in a safe place on your computer. You should ensure that you have confirmation of your legal business name from your State before you apply for the EIN.
Once you get your corporate paperwork back from the state, you can apply for an EIN (employer identification number) with the IRS here: https://sa.www4.irs.gov/modiein/individual/index.jsp